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168.17 ms | 1399 KiB | 7 Q<?php
function v1($first, $last)
{
$result = trim($first);
$lastName = trim($last);
if ($lastName) {
if (!empty($result)) {
$result .= ' ';
}
$result .= $lastName;
}
return $result;
}
function v2($first, $last)
{
return implode(" ", [trim($first), trim($last)]);
}
function v3($str1, $str2)
{
return (strlen($str1) > 0 && strlen($str2) > 0) ? ($str1 + " " + $str2) : (strlen($str1) > 0) ? $str1 : $str2 ;
}
function v($first, $last)
{
echo v1($first, $last);
echo PHP_EOL;
echo v2($first, $last);
}
v('first', 'second');